18-04-2013 дата публикации
Номер: US20130092873A1
Принадлежит:
The invention relates to a method for preparing a composite material comprising a polymeric matrix and a filler consisting in ion exchange inorganic particles, comprising a step for synthesis in situ of said particles within the polymeric matrix. 1. A method for preparing a composite material comprising a polymeric matrix and a filler consisting in ion exchange inorganic particles comprising a step for synthesis in situ of said particles within the polymeric matrix.2. The method according to claim 1 , wherein the step for synthesis in situ is carried out with the sol-gel method.5. The method according to claim 3 , wherein M is silicon claim 3 , titanium or aluminium.6. The method according to claim 3 , wherein X is an —OR′ group or a halogen atom claim 3 , R′ representing an alkyl group.7. The method according to claim 3 , wherein R is a cation exchange group of formula -R-Z′ claim 3 , wherein:{'sup': '2', 'Ris a simple bond, a linear or branched alkylene group or a cyclic hydrocarbon group;'}{'sup': '1', 'sub': 3', '3', '2', '2, 'Zis an —SOH, —POH, —COH group, optionally as salts.'}8. The method according to claim 3 , wherein R is a group of formula -R-Z claim 3 , wherein:{'sup': '2', 'Ris a simple bond, a linear or branched alkylene group, or a cyclic hydrocarbon group;'}{'sup': 3', '1, 'claim-ref': {'@idref': 'CLM-00007', 'claim 7'}, 'Zis a precursor group of a group Zas defined in .'}10. The method according to claim 9 , wherein the precursor is the mercaptopropyl-triethoxysilane of formula:{'br': None, 'sub': 2', '3', '2', '3', '3, 'HS—(CH)—Si(OCHCH).'}12. The method according to claim 1 , wherein the constitutive polymer(s) of the matrix are selected from fluorinated thermoplastic polymers.13. The method according to claim 12 , wherein the fluorinated thermoplastic polymers are non-ion exchange polymers selected from polytetrafluorethylenes (known under the acronym of PTFE) claim 12 , polyvinylidene fluorides (known under the acronym of PVDF) claim 12 , ...
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